First, it will weigh about 600lbs...
I just had a Morse very similar to this, I could not get the cams for different patterns to move freely, heat, oil, kerosene, etc. Therefore I would want to remove the lid and cycle through the patterns to make sure things are moving underneath. Check the movement of the needle bar while on ZZ max width, make sure the needle is moving all the way to both sides. I emphasize the ZZ because even if you can't get the fancy patterns to work you could end up with a very heavy duty ZZ machine. On mine I couldn't get the ZZ to do what it was supposed to do.